We will be showing a great demo next week at Community One and Java One which will highlight a scalable open source search engine using Drizzle, Memcached, Gearman and Sphinx. See Eric's write up for more details.
If you are going, please drop by the Drizzle booth and check out the demo and say hello. Hope to see you there.
your link for sphinx is wrong:
http://www.sphinxsearch.com/
Fixed it. Thanks